Nsryjdtyk

I am new in objective c. And I have been looking for examples/answer that describes the outline view expansion of items. Now what I am trying to do is, mark all items as expandable. Now when the user clicks to expand the item, it calls the API, inserts its children if any, and then reload the table view. The Code is given below:

 - (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item{

//initially make all items expandable to check and load data later on

            return YES;

    }



- (NSInteger)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item{    

    if (item == nil) {     

        return RootLists.count;

    }

    if ([item isKindOfClass:[NSDictionary class]]) {

        reloadCheck=true;

        return [[item objectForKey:@"children"] count];

    }

    return 0;

}



- (id)outlineView:(NSOutlineView *)outlineView child:(NSInteger)index ofItem:(id)item{



    if (item == nil){       

        return [RootLists objectAtIndex:index];

    }

    if ([item isKindOfClass:[NSDictionary class]]) {

        return [[item objectForKey:@"children"] objectAtIndex:index];

    }

    return nil;

}





-(NSView *)outlineView:(NSOutlineView *)outlineView viewForTableColumn:(NSTableColumn *)tableColumn item:(id)item{

    NSView *rowView;

    rowView=[[NSView alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)];

    [rowView setWantsLayer:YES];   

     NSTextField *textField;        

    [textField setMaximumNumberOfLines:1];

    [textField setStringValue:[item valueForKey:@"Name"]];       

    [textField setBezeled:NO];

    [textField setDrawsBackground:NO];

    [textField setEditable:NO];

    [textField setSelectable:NO];  

    [rowView addSubview:textField];

    return rowView;

}







    - (BOOL)outlineView:(NSOutlineView *)outlineView  shouldExpandItem:(id)item{

                NSMutableArray *getchildrenlist=[database GetData:[item valueForKey:@"id"]];    

                if (getchildrenlist.count>0) {

//If children are already present then return 1

        return 1;

                }

                else

                {

//If children are not present then hit API, get children online and then reload the view with children

                    dispatch_group_t DispatchGroup = dispatch_group_create();

                    dispatch_group_enter(DispatchGroup);

                    [self ExpandDataApi:1 FolderId:[item valueForKey:@"id"] DispatchGroup:DispatchGroup];              

                    dispatch_group_notify(DispatchGroup,dispatch_get_main_queue(),^{

                                [self reloadData:item];

                                [self->_Outline_View reloadData];

    });

        return 1;

                }



            }

Now the issue is: the table reloads after each click, but never expands it with new children added to the row. Instead, it collapses all items. But after it is clicked again (same item clicked twice), the item expands correctly with new children.
What I want is: reload table and expand that row with its new children after getting new values.